Letter stamp case



FIG. 1 is a perspective view of a letter stamp case, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof; the rear elevational view being identical to FIG. 4; and,

FIG. 5 is a right side elevational view thereof; the left side elevational view being identical to FIG. 5. 

CLAIM The ornamental design for a letter stamp case, as shown. 